Add custom HitWindows

Use them in HitObject and Scoring
HitResult like the original game : Great, Good, Ok, Miss

osu.Game.Rulesets.Gitaroo/GitarooRuleset.cs

@@ -13,6 +13,7 @@
 using osu.Game.Rulesets.Gitaroo.Beatmaps;
 using osu.Game.Rulesets.Gitaroo.Mods;
 using osu.Game.Rulesets.Gitaroo.UI;
+using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.UI;
 
 namespace osu.Game.Rulesets.Gitaroo
@@ -55,6 +56,13 @@ public override IEnumerable<KeyBinding> GetDefaultKeyBindings(int variant = 0) =
             Font = OsuFont.Default.With(size: 18),
         };
 
+        protected override IEnumerable<HitResult> GetValidHitResults() => new[]
+        {
+            HitResult.Great,
+            HitResult.Good,
+            HitResult.Ok
+        };
+
         // Leave this line intact. It will bake the correct version into the ruleset on each build/release.
         public override string RulesetAPIVersionSupported => CURRENT_RULESET_API_VERSION;
     }

osu.Game.Rulesets.Gitaroo/Objects/GitarooHitObject.cs

@@ -2,13 +2,17 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Game.Rulesets.Gitaroo.Judgements;
+using osu.Game.Rulesets.Gitaroo.Scoring;
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Scoring;
 
 namespace osu.Game.Rulesets.Gitaroo.Objects
 {
     public class GitarooHitObject : HitObject
     {
         public override Judgement CreateJudgement() => new GitarooJudgement();
+
+        protected override HitWindows CreateHitWindows() => new GitarooHitWindows();
     }
 }

osu.Game.Rulesets.Gitaroo/Scoring/GitarooHitWindows.cs

@@ -0,0 +1,20 @@
+using osu.Game.Rulesets.Scoring;
+
+namespace osu.Game.Rulesets.Gitaroo.Scoring;
+
+public class GitarooHitWindows : HitWindows
+{
+    public override bool IsHitResultAllowed(HitResult result)
+    {
+        switch (result)
+        {
+            case HitResult.Great:
+            case HitResult.Good:
+            case HitResult.Ok:
+            case HitResult.Miss:
+                return true;
+        }
+
+        return false;
+    }
+}